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Runtime/Engine/Code/Services/Game/GameService.cs

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+using System.Threading;
+using Cysharp.Threading.Tasks;
+using RebootKit.Engine.Foundation;
+
+namespace RebootKit.Engine.Services.Game {
+    public class GameService : IService {
+        private static readonly Logger _logger = new(nameof(GameService));
+        
+        private GameModeAsset _gameModeAsset;
+        private GameMode _gameMode;
+        private bool _running;
+        
+        public async UniTask OnInit(CancellationToken cancellationToken) {
+            await UniTask.Yield(cancellationToken);
+        }
+
+        public void Dispose() {
+            _running = false;
+            _gameMode.Dispose();
+        }
+
+        public async UniTask Start(GameModeAsset asset, CancellationToken cancellationToken) {
+            _gameMode = asset.Create();
+            await _gameMode.Start(cancellationToken);
+
+            Run(cancellationToken).Forget();
+        }
+
+        private async UniTask Run(CancellationToken cancellationToken) {
+            if (_gameMode == null) {
+                _logger.Error("Trying to run game without game mode");
+                return;
+            }
+            
+            _running = true;
+            while (_running) {
+                await UniTask.Yield(PlayerLoopTiming.Update, cancellationToken);
+                _gameMode.Tick();
+            }
+        }
+    }
+}